Superconductivity emerging near quantum critical point of valence transition

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dc.creatorWatanabe, Shinji
dc.creatorImada, Masatoshi
dc.creatorMiyake, Kazumasa
dc.date2006-02-13
dc.date2006-07-11
dc.date.accessioned2026-07-07T07:01:40Z
dc.date.available2026-07-07T07:01:40Z
dc.descriptionThe nature of the quantum valence transition is studied in the one-dimensional periodic Anderson model with Coulomb repulsion between f and conduction electrons by the density-matrix renormalization group method. It is found that the first-order valence transition emerges with the quantum critical point and the crossover from the Kondo to the mixed-valence states is strongly stabilized by quantum fluctuation and electron correlation. It is found that the superconducting correlation is developed in the Kondo regime near the sharp valence increase. The origin of the superconductivity is ascribed to the development of the coherent motion of electrons with enhanced valence fluctuation, which results in the enhancement of the charge velocity, but not of the charge compressibility. Statements on the valence transition in connection with Ce metal and Ce compounds are given.
dc.description9 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0602291
dc.identifierhttp://arxiv.org/abs/cond-mat/0602291
dc.identifierJ. Phys. Soc. Jpn. 75 (2006) 043710
dc.identifierdoi:10.1143/JPSJ.75.043710
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/108346
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleSuperconductivity emerging near quantum critical point of valence transition
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